The clitoris can not secrete anything unless you have some medical problems. There are NO glands or holes in the clitoris. Although it is the same material that make up the male penis, your pee hole is below the clitoris, not in it like with men.
Cervical mucus comes and goes with your monthly cycles. Sexual arousal fluid comes from the vagina. It can be affected by your general health.
Use personal lubricant (from the condom isle at your pharmacy or super market).
A decrease in vaginal secretions can be the result of many things. There may be a bacterial infection or even just an imbalance due to things such as diet or stress. I always suggest seeing a doctor whenever possible. It's important not to gamble with your health. Having an actual diagnosis can put your mind at ease, reduce stress and often helps alleviate the symptoms.